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#!/usr/bin/perl -w
use strict;
use HTML::Parser;
# fix pod2html output:
# v1.0: defer </dd> and </dt> tags until
# the next <dd>, <dt> or </dl>
# v1.1: don't nest any <a> elements;
# end one before beginning another
# v1.2: insert <dd> tags if <dl> occurs
# inside <dt>
# v1.3: <a> anchors must not start with a digit;
# insert a letter "N" at the start if they do
# v1.4: insert the "N" letter into <a href="#xxx"> too.
my $p = HTML::Parser->new(api_version => 3);
$p->handler(start => \&startsub, 'tagname, text');
$p->handler(end => \&endsub, 'tagname, text');
$p->handler(default => sub { print shift() }, 'text');
$p->parse_file(shift||"-") or die("parse: $!");
my @stack;
my $a=0;
sub startsub {
my $tag = shift;
my $text = shift;
if ($tag eq "dl") {
if (@stack and $stack[0] eq "dt") {
$stack[0] = "dd";
print "</dt><dd>";
}
unshift @stack, 0;
}
if (($tag eq "dt" or $tag eq "dd") and $stack[0]) {
print "</$stack[0]>";
$stack[0] = 0;
}
if ($tag eq "a") {
if ($a) {
print "</a>";
} else {
$a++;
}
$text =~ s/(name="|href="#)(\d)/$1N$2/;
}
print $text;
}
sub endsub {
my $tag = shift;
my $text = shift;
if ($tag eq "dl") {
print "</$stack[0]>" if $stack[0];
shift @stack;
}
if ($tag eq "a") {
if ($a) {
print "</a>";
$a--;
}
} elsif ($tag eq "dd" or $tag eq "dt") {
$stack[0] = $tag;
} else {
print $text;
}
}
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